Traffic engineers are making efforts to mitigate congestion and to improve efficiency at intersections. The symmetric intersection (SI) can increase the capacity of intersections and is economical, practical, efficient and convenient. The pedestrians’ crossing patterns tailored for SI has not yet been studied. This paper not only develops three pedestrian crossing patterns but also analyzes crossing patterns from the aspects of efficiency and safety. For efficiency, delay models are proposed by considering through and diagonal pedestrian movements. For safety, exposure conflicts and the number of potential traffic accidents are analyzed. Then delay and potential accidents are converted into money value respectively and the total cost is calculated. The case study results show that SI performs better in terms of increasing capacity and decreasing pedestrian delay compared with conventional intersection. Crossing pattern 1 is efficient but unsafe while the total delay and safety cost of pattern 3 is usually the highest. The sensitivity analysis indicates that cycle length has a negative impact on average pedestrian cost and if critical flow ratio increases, the average pedestrian cost of pattern 1 and pattern 3 will increase and decrease respectively. Furthermore, the best pedestrian pattern choice under different values of cost per accident and cost of pedestrian delay is also studied.

交通工程师正在努力减轻拥堵并提高十字路口的效率。对称交叉路口可以增加交叉路口的通行能力，经济，实用，高效，便捷。尚未研究针对SI量身定制的行人过马路模式。本文不仅提出了三种行人过路方式，而且从效率和安全性的角度分析了过路方式。为了提高效率，通过考虑直行和对角行人运动提出了延迟模型。为了安全起见，分析了暴露冲突和潜在的交通事故数量。然后将延迟和潜在事故分别转换为货币值，并计算总成本。案例研究结果表明，与常规交叉路口相比，SI在提高通行能力和减少行人延误方面表现更好。穿越模式1是有效的但不安全的，而模式3的总延迟和安全成本通常最高。敏感性分析表明，周期长度对平均行人成本有负面影响，如果临界流量比增加，则模式1和模式3的平均行人成本将分别增加和减少。此外，还研究了在每次事故成本和行人延误成本不同值下的最佳行人模式选择。敏感性分析表明，周期长度对平均行人成本有负面影响，如果临界流量比增加，则模式1和模式3的平均行人成本将分别增加和减少。此外，还研究了在每次事故成本和行人延误成本不同值下的最佳行人模式选择。敏感性分析表明，周期长度对平均行人成本有负面影响，如果临界流量比增加，则模式1和模式3的平均行人成本将分别增加和减少。此外，还研究了在每次事故成本和行人延误成本不同值下的最佳行人模式选择。